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Investment In Affiliates - Additional Information (Detail) (USD $) | Dec. 31, 2012
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Safety Hi-Tech S.r.l |
Investment [Line Items] |
Percentage of ownership in Joint Venture | 40.00%
Equity method investments | $ 516,000
Safety Hi-Tech S.r.l | Equipment |
Investment [Line Items] |
Equity method investments | 408,000
Banini-Binotti Associates |
Investment [Line Items] |
Percentage of ownership in Joint Venture | 20.00%
Safety Hi-Tech Usa Llc |
Investment [Line Items] |
Percentage of ownership in Joint Venture | 50.00%
Equity method investments | $ 622,000

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